/Engine/Source/Runtime/Engine/Classes/GameFramework/PlayerController.h
If bAutoManageActiveCameraTarget is true, then automatically manage the active camera target. If there a CameraActor placed in the level with an auto-activate player assigned to it, that will be preferred, otherwise SuggestedTarget will be used.
virtual void AutoManageActiveCameraTarget ( [AActor](API\Runtime\Engine\GameFramework\AActor) * SuggestedTarget )